AVR Hack for Pre- outs. Ended up being simply wondering in case it is feasible to hack an AVR without pre-outs to produce preamp sign become given to a outside amplifier.

Well-Known Member

Had been simply wondering in case it is feasible to hack an AVR without pre-outs to supply preamp sign become given to a outside amplifier. After some R& D came over the following 2-3 choices to take action:

1. Surgery- open the AVR , discover the alert course between preamp and amplifier board and solder a cable through the preamp FL, FR and ground off to an unused RCA port on the rear of the AVR. But taking into consideration the cost of an AVR it is hard for most people to make use of this program though it can be simply be done by FMs with some tinkering experience. The end result could be the just like having pre-outs to an otherwise sealed AVR.

2. Utilize an advanced level – Low amount converter: this really is a thing that is employed in vehicle sound for connecting a outside amp to a factory fitted vehicle amp without pre amp outs. The converter fundamentally converts the wattage that is high sign to low wattage signal and this can be properly given to some other amplifier. Nonetheless I’m not certain that this revolutionary product designed for vehicle sound are designed for a wattage that is large originating from an AVR designed for center/ FL/FR (do not mind the employment of technical terms such as for instance wattage since I have do not are part of “that” industry)

3. Make use of an expert converter such as Behringer DI 4000- for about INR 3,900 (for gay escort rochester ny 1 channel) to about INR 9,000 (for 4 stations), this may seem like a viable choice. The only requirement will be compared to a XLR to RCA converter to feed the production into the RCA ins of the energy/ integrated amp.

Whenever we may use some of the 3 practices above then there will not be a necessity to purchase high priced AVRs (with the exception of more networks). We could merely add power amps and run the show.

There isn’t a lot of product regarding the approach that is above. If some of these methods have been tried by you or have feedback on which can work please inform me.


Well-Known User

Though we have never tried your concept, it seems interesting to incorporate pre-outs to an AVR (if that can be done).. Guess, it could need an experienced individual to accomplish this (or) a person who knows electronic devices perfectly..

Best of luck, and keep us published on which you determine to do..

Well-Known User

Surely well well worth an attempt whether or not it’s your receiver that is spare sitting. If not, safer to get an older marantz nr series with pre outs and commence enjoying the movies quicker.


Well-Known User

Positively worth a go whether or not it’s your free receiver sitting idle. If you don’t, easier to get an older marantz nr series with pre outs and commence enjoying the movies faster.

The passive high to voltage that is low arrived yesterday. We connected it into the front kept and front right speaker outs for the Denon 2500H receiver. The outputs of this converter had been linked to the RCA ins (CD) associated with Rotel RA 10 amplifier. The leading Left and Front Right Speakers were attached to the Rotel’s FL and FR terminals. We disconnected all the speakers from the AVR making sure that i possibly could do a little listening that is critical comprehend distortions in noise if any.

We carefully switched on the AVR and also the Rotel with both dials (volume) at Nil and played a Vinyl through a TT attached to the Denon AVR. First we increased the Denon amount slowly to see if there have been any heat spikes anywhere (heat) then resulted in the Rotel to about 9 o clock. I became pleasantly surprised to be greeted by sweet music. No distortion- humming or hiss of every kind. There clearly was a small surge in low end plus some sparkle during the upper end. I happened to be astonished by the bass since We had never ever heard my bookshelves create such bass before. Nevertheless it was not overpowering or fatiguing one other frequencies. I became playing music really critically yesterday and checking conditions associated with AVR, Rotel and a lot of notably the passive converter. The Rotel had been slightly hot across the heatsinks plus the Denon was warm up somewhat. I became hearing music for pretty much 2 hours yesterday from Jagjit Singh to Bob Dylan to Bollywood tracks streamed from Amazon music.

The Rotel remained warm not hot after 2 hrs. The AVR had been warmer but i suppose it was because of continuous 2 hrs usage and the converter had been since cool as a cucumber.

Impressions regarding noise in basic:

1. Small uptick in low frequencies- which included absolutely to your experience. 2. silence that is complete hiss- hum 3. extremely wide soundstage- often going outside of the presenter width 4. Vocals were crystal clear- in reality in another of the songs i possibly could feel Kumar Shanu operating away from breathing in the bottom end 5. Vocals seemed elevated through the remaining portion of the sound field and I suggest literally- focused but somewhat gaining in height- have no idea should this be good or bad but sounded good.

Cons: 1. AVR continues to be making use of the amp section (cant bypass this unless the AVR is opened by me and bypass the amp) 2. The sign is certainly going through 2 preamps- the Denon plus the Rotel. This can carry on unless we link a charged energy amp.

I shall continue steadily to try this for an extended duration and order another one then for the center channel